SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 21, 2004 ------------------------------------------------ Date of Report (Date of earliest event reported) Wabash National Corporation ------------------------------------------------------ (Exact name of registrant as specified in its charter) Delaware 1-10883 52-1375208 -------------------------------------------------------------------------------- (State or other (Commission (IRS Employer jurisdiction File No.) Identification No.) of incorporation) 1000 Sagamore Parkway South, Lafayette, Indiana 47905 ----------------------------------------------------------------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (765) 771-5310 ------------------ Not applicable ----------------------------------------------------------- (Former name or former address, if changed since last report) Exhibit Index on Page 4 Item 12. Results of Operations and Financial Condition. On April 21, 2004, Wabash National Corporation issued a press release relating to its first quarter 2004 results. The press release is attached hereto as Exhibit 99.1 and incorporated herein by reference. Page 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized. WABASH NATIONAL CORPORATION Date: April 21, 2004 By: /s/ MARK R. HOLDEN -------------------------------- Mark R. Holden Senior Vice President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) Page 3 EXHIBIT INDEX EXHIBIT NO. DESCRIPTION ----------- ----------- 99.1 Press Release dated April 21, 2004 Page 4